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Systems of Linear Equations. Recalling Prior Knowledge. Recall Prior Knowledge. Graphing linear equations using a table of values (function table). Recall Prior Knowledge. To graph a linear equation, you can first construct a table of x and y values.

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## Systems of Linear Equations

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**Systems ofLinear Equations**Recalling Prior Knowledge**Recall Prior Knowledge**• Graphing linear equations using a table of values (function table).**Recall Prior Knowledge**• To graph a linear equation, you can first construct a table of x and y values. • For example, you substitute x =0 in the equation y =2x +1 to get the corresponding value of y.**Recall Prior Knowledge**• From the table of values, you plot the pairs of values on a coordinate grid. Then jointhe points using a straight line to graph the linear equation.**Quick Check**• Copy and complete the table of values for thelinear equation. Then draw itsgraph on a coordinate grid.**Recall Prior Knowledge**Graphing linear equations using slopes and y-intercepts.**Recall Prior Knowledge**• You can also graph linear equations by recognizing that linear equations have theform y =mx +b, where m is the slope and b is the y-intercept. • For example, for y =2x +1, the graph has slope 2 and intersects the y-axis at 1.**Quick Check**• y =5x • y = 2x +2 • 2y =x – 2**Assignment: Assessing Your Prior Knowledge**You are assigned problems 1 – 19 on page 367 in the red algebra I book. Remember, you can use your notes from previous units as well as the red algebra I book if you need help correctly solving the problems.

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